Great for school or home, these Educational Jumbo Flashcards come in 3 different lessons: addition, multiplication and division. Each set comes in an individual box with 35 double-sided cards and an instruction sheet. Each piece is made of card stock for durability. Comes with cardboard tray for storage. Cards measure approximately 2 1/2" x 4 1/4". Comes packaged in a hanging box. Box measures approximately 3.75" x 1" x 6.375".